Heel-trimming machine



(No Model.)

4'Sheets-Sheet l. J. W. PLUMMER.

HEEL TRI'MMING MACHINE.

Patented Oct.. 15, 1889..

N PETEni Pham (No Modl.)V

` 4 Sheets-Sheet 2. J. W. PLUlVID/IER.v

HEEL TRIMMING MACHINE.

No. 413,090. Patented oet. 15.1889.

INVENTHI 4 Sheets-Sheet 3.

J. W. PLUMMIER.

HEEL TRIMMING MACHINE.

No. 413,090. Patented 001. 15, 1889.

11m/Hmmm:

4 Sheets-Sheet 4.

(No Model.)v

J. W. PLUMMBR.

HEEL TEIMMING MACHINE.

Patented Oct. 1.5, 1889.

lJNiTnD STATES FATnNT Ormes.

JOHN W. PLUMMER, OF SOMERVILLE, ASSIGNOR TO TI-IE ACME HEEL TRIMMER COMPANY, OF BOSTON, MASSACHUSETTS.

HEEL-TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,090, dated October 15, 1889.

Application led May 2G, 1889. Serial No. 311,372. (No model.)

To all whom t may concern:

Be it known that I, JOHN W. PLUMMER, of Somerville, in the county of Middlesex and State of Massachusetts, haveinvented certain 5 new and useful Improvements in Heel-Trimming Machines, of which the following' is a specification.

This invention relates to heel-trimming machines employing` a rotary cutterehead, a topro lift support or rest located at one end of the cutter-head and formed to support both the tread and the edge of the top lift when the heel is presented to the cut-ter, a counterguard arranged to cover the end of the cutterr 5 head opposite the toplift rest and provided with means whereby it may be adjusted and xed in different positions to accommodate cutters of different sizes, and a randftrimmer located on another shaft and formed to trim zo the rand and heel-seat port-ions of the heel after the main trimming operation, l

The invention consists in certain improve-` ments, hereinafter described, relating to the means for adjusting the counter-guard, the head or cover applied to the rand-trimmer and connected with a blower for the removal of cuttings, dce., and to means for stopping the rotation. of the c utter-head after the power is removed from the shaft thereof to prevent 3o protracted rotation of said cutter-head by momentum, and to means for adjusting the heelrest accompanying the rand-trimmer.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents 3 5 a top view of my improved machine. Fig. 2 represents a front view of the same. Fig. 3 represents a section on line a. Fig. l, looking toward the right. Figs. 4, 5, 6, and 7 represent detail views.

The same letters of reference indicate the same par-ts in all the figures.

In the drawings, a represents the cutterhead, which is mounted on a shaft b, to which power is applied bya drivin gbelt c', the shaft h being journaled in suitable bearings on the frame of the machine. The cutter-head may be of any suitable construction, the same forming no part of the present invention.

d represents the counter-guard, which is 5o cup-shaped and formed to coverthe outer end of the cutterhead, as shown in Fig. 2. Said guard is formed on or attached to a stud which is journaled in a socket in a boss c,

I vention.

which is formed on an arm. e', attached to a cylindrical rod or stud e. Said stud extends backwardly at right angles with the axis of the cutter-head and is inserted. in a split socket or clamp f on anadjustable carriage g. A screw h, inserted in ears on said clamp, enables the latter to be tightened, so as to hold 6o the stud e with the counter-guard at any desired point, the counter-guard being thus made adjustable at right angles with the axis of the cutter-head, and therefore capable of use with cutters of various sizes.

The above-described means for holding and adjusting the counter-guard are not new, however, and constitute no part of the present in- The carriage g is adjustable in ixed guides 7o or ways ft" t" on a fixture or bracket @attached to the supporting-frame, said guides being parallel with the axis of the cutter-head and permitting the counter-guard to be adj usted lengthwise of the cutter, so as to project more or less over the same and accommodate cutters of different lengths. To this end the car riage, which has a dovetail rib on its lower side, Figs. 4 and 5, engaging the dovetail guides t" 1", is provided with a downwardly- 8o projecting ear j', in which is journaled the unthreaded outer portion of a screw-rod k, the inner portion of which is threaded'and engaged with a nut m, which is connected with the fixture or bracket t. The rotation of the screw k causes an endwise movement of the carriage g. The means thus far described for effecting said endwise adjustment are not new, but are shownin Letters Patent granted to F. N. Ethridge the 16th day of October, 9o 1888, No. 391,306. I have improved on the said adjusting devices by making the nut m movable on the bracket@ and providing means whereby the said nut m may be released from the bracket, so that said nut, with the screw j and the carriage g, may be moved rapidly in the guides i', the nut, screw, and carriage moving together as one part. To this end I form the nut m on a slide m, which is 'fitted to move freely in a slot o in the bracket t' roo and is engaged with said bracket by a bolt p, inserted in the bracket and entering a socket formed for it in the slide m. Said bolt is secured to one end of a lever q, which is pivoted at r to the bracketz' and has its opposite 105 end forced outwardly by a spring s, Fig. l,

said spring holding the bolt p in engagement with the slide m. Vhen it is desired to disconnect the carriage g from the bracket t' and rapidly adjust the carriage, the outer end of the lever q is pressed inwardly, thus withdrawing the bolt p from the slide m. The carriage g, screw 7c, and nut m may now be moved outwardly to any desired extent and as rapidly as may be desired. The object of this provision for disconnecting the carriage from its support is to enable the counterguard to be quickly moved so far back that it can be swung upwardly out of line with the cutter-head shaft, as shown by dotted lines in Fig. 2, thus permitting access to the cutterhead for the purpose of adjusting the knives, or for any other purpose.

When the carriage is moved back to its operative position, the bolt p springs into engagement with the slide m', on which the nut ported by means substantially like those described in the patent above referred to.

o represents the rand-trimmer, which is afiixed to a shaft w, journaled in a fixed bearing A. Said rand-trimmer is partly inclosed in a hood B, which Iis supported by an arm or bracket B', attached to the head or frame of the machine, and is connected by a tube C with a blower-casing located at or near the base of the supporting-frame, said blower being connected by a trunk or tlue with a hood D, partly inclosing the cutter-head, substantially as shown in the pending application of F. N. Ethridge, iiled September 25, 1888, Serial No. 286,250, so that the same blower removes the dust, cuttings, the., from both the cutter-head and the rand-trimmer. In the present case I have improved on the hood shown in said Ethridge application by making said hood in two sections l5 16. The section 15 is rigidly attached to the bracket B', and the section 16, which covers the main portion of the rand-trimmer, is connected at its rear portion by a hinge 19 with the fixed section 15, the pivot of said hinge being` parallel with the axis of the rand-trimmer, so that the section 16 can be swung back, as shown in dotted lines in Fig. 3, thereby nncovering the rand-trimmer and permitting its adjustment, removal, and replacement. rlhe pipe C is provided with an enlargement C, the upper edge of which is inclined and is formed to iit the lower edge of the section 16, as shown in Fig. 3.

J represents the rest, which is arranged in front of and about at right angles with the axis of the rand-trimmer to support the side of the heel. Said rest is pivoted at K to an arm L, which is formed on or rigidly attached to a split collar M, which is clamped upon the iixed bearing A, said collar having ears M', which are connected by a screw N, whereby the collar may be compressed upon said bearing. It will be seen that by loosening the screw N the collar is loosened and may be turned upon the bearing A to raise or lower the rest J, and when said rest is adjusted at the desired height it may be secured by tightening the collar M by means of the screw N.

The rest J is held in its operative posit-ion by a spring R, which bears on an arm J', formed on the rest, and permits the rest to swing laterally our. of its operative position, as described in theEthridge application above referred to.

F represents a wheel affixed to the driving-shaft b, and G represents a lever pivoted upon the shaft of the rand-trimmer and having at its upper end a brake-shoe G, arranged to be pressed against the periphery of the wheel F by an outward movement of the lower end of the lever G. The operator is thereby enabled to quickly stop the rotation of the cutter-head and its shaft after the power has been thrown off, so that the necessity of waiting for the cutter-head and shaft to lose their momentum is avoided.

I claim- 1. In a heel-triinming machine, the combination, with the cutter-head and the counterguard, of the carriage supporting the counter-guard, a screw journaled in a bearing on the carriage, a fixed bracket having guides in which said carriage is movable parallel with the axis of the cutter-head, a nut fitted to slide in a slot or guide in. said bracket and engaged with said screw, and means for locking said nut to the bracket and for disengaging it therefrom, whereby when the nut is locked to the bracket the carriage and counter-guard can be adjusted only by the rotation of said screw, but when the nut is unlocked or released from the bracket said nut, screw, carriage, and counter-guard may be moved rapidly as one piece, as set forth.

2. In a heel-trimming machine, the combination, with the cutter-head and the counterguard, of the carriage supporting the counter-guard, a fixed bracket having guides t', in which said carriage is movable parallel with the axis of the cutter-head, a nut secured to said bracket and engaged with a screw on the carriage, a boltp in said bracket, adapted to engage said nut, and a springpressed lever pivoted to the bracket and engaged with said bolt, as set forth.

The heel-rest J, having an arm J combined with a rotary trimmer, a support to which said rest is pivoted, and a spring secured at one end to said support and bearing at the other end on said arm J as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 13th day of May, A. D. 1889.

JOHN IV. PLUMMER. aWitnesses:

C. F. BROWN, A. D. HARRISON.

IOO 

